This week we look at the Cell Cycle.
Explain the cell cycle and the phases of cell division.
Also, on Thursday, we have the PlastiVan coming to school to put on demonstrations for the eighth grade. Post your comments on that as well.
Due Friday: Contract 28
6 comments:
ok so the cell cyclel:
first theres mitosis;
the steps of this is;;
as fallowed::-->
Interphase-The cell is engaged in metabolic activity and performing its prepare for mitosis (the next four phases that lead up to and include nuclear division).
Prophase-Centrioles begin moving to opposite ends of the cell and fibers extend from the centromeres. Some fibers cross the cell to form the mitotic spindle.
Prometaphase-Proteins attach to the centromeres creating the kinetochores. Microtubules attach at the kinetochores and the chromosomes begin moving.
Metaphase-Spindle fibers align the chromosomes along the middle of the cell nucleus. This line is referred to as the metaphase plate
Anaphase-The paired chromosomes separate at the kinetochores and move to opposite sides of the cell.
Telophase-Chromatids arrive at opposite poles of cell, and new membranes form around the daughter nuclei.
Cytokinesis-In animal cells, cytokinesis results when a fiber ring composed of a protein called actin around the center of the cell contracts pinching the cell into two daughter cells, each with one nucleus.
&&thats all i got:) have a nice day
CELL CYCLE
The frist step is
Interpahce;; where the cells grow and normal metaolic roles. The DNA replicates(synthesis). and it also grows more and prepares for prophase.
Prophase;;this is where cromosomes separate and move to oppoiste sides of the cell. And spindal fibers appear.
Prometaphase;;Spindle fibers attach to chormosomes and cormosomes condense.
Metaphase;;chromosomes align
Anaphase;;chormosomes divide,sister chromatids move to opposite poles.
Telephase;;the nuclear membrane remforms, chormosomes decondense and the spindle fibers disappear.
all of that is Mitoisis
Cytokinesis;;where cytoplasum divides and the parent cells become two daughter cells with idential genitic information.
And the happens all over again
I thought that when that ladyy came in it was really fun and i learnd new things about plastics!(:
MR.HOOPMAN!!!! HAHA!! I miss you as a Science teacher!!!! Post this!!! Please!!!
Hey, I miss you all, too. Hope high school is treating you well, LJ.
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